Tongue Rolling Genetics
Country: United States
Date: June 2005
My daughter can curl her tongue but my husband and I
cannot. She doubted herself as an adopted child because she searched
everywhere saying tongue curling is inherited. Why?
In view of the fact that identical twins aren't always both tongue rollers,
tongue rolling is not a simple Mendelian trait. Do a search on Google under
"tongue rolling genetics" and you will see many articles showing that tongue
rolling is not a good example of Mendelian inheritance.
Ron Baker, Ph.D.
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Update: June 2012